<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button id="btn">按钮</button>
    <script onclick="clickHandle()">
        function clickHandle(){
            console.log("点击了按钮");
            
        }
    </script>
</body>
</html>